X0508 4 2025-05-23 0 0000937098 TRINET GROUP, INC. TNET 0001694481 AGI-T, L.P. C/O ATAIROS MANAGEMENT, L.P. 40 MORRIS AVENUE, STE 300 BRYN MAWR PA 19010 1 0 1 0 0001393014 Angelakis Michael J C/O ATAIROS MANAGEMENT, L.P. 40 MORRIS AVENUE, STE 300 BRYN MAWR PA 19010 1 0 1 0 0001671176 Atairos Partners GP, Inc. C/O ATAIROS MANAGEMENT, L.P. 40 MORRIS AVENUE, STE 300 BRYN MAWR PA 19010 1 0 1 0 0001671185 Atairos Partners, L.P. C/O ATAIROS MANAGEMENT, L.P. 40 MORRIS AVENUE, STE 300 BRYN MAWR PA 19010 1 0 1 0 0001671122 Atairos Group, Inc. C/O ATAIROS MANAGEMENT, L.P. 40 MORRIS AVENUE, STE 300 BRYN MAWR PA 19010 1 0 1 0 0001694477 A-T Holdings GP, LLC C/O ATAIROS MANAGEMENT, L.P. 40 MORRIS AVENUE, STE 300 BRYN MAWR PA 19010 1 0 1 0 0001697046 A-A SMA, L.P. C/O ATAIROS MANAGEMENT, L.P. 40 MORRIS AVENUE, STE 300 BRYN MAWR PA 19010 1 0 1 0 0001697053 A-A SMA GP, LLC C/O ATAIROS MANAGEMENT, L.P. 40 MORRIS AVENUE, STE 300 BRYN MAWR PA 19010 1 0 1 0 0 Common Stock 2025-05-23 4 A 0 2649 0 A 34735 I See footnote Common Stock 3169354 I See footnote Common Stock 14916419 I See footnote Reflects the grant to Mr. Angelakis of Restricted Stock Units that convert into Common Stock, par value $0.000025 per share, of the Issuer ("Common Stock"), on a one-for-one basis. The Restricted Stock Units will vest 100% on the earlier of the 12-month anniversary of the date of grant and the trading day preceding the date of the Company's 2026 Annual Meeting of the Stockholders, subject to Mr. Angelakis' continued service. The Restricted Stock Units are also subject to accelerated vesting upon certain events. Reflects (i) 2,649 Restricted Stock Units and (ii) 32,086 shares of Common Stock directly beneficially owned by Mr. Angelakis, which were previously delivered to Mr. Angelakis in connection with the vesting of Restricted Stock Units granted to him in his capacity as a director of the Issuer. This Form 4 is being filed by more than one Reporting Person. A-T Holdings GP, LLC is the general partner of AGI-T, L.P. Atairos Group, Inc. is the sole member and manager of A-T Holdings GP, LLC and the sole limited partner of AGI-T, L.P. A-A SMA GP, LLC is the general partner of A-A SMA, L.P. Atairos Group, Inc. is the sole member and manager of A-A SMA GP, LLC and the sole limited partner of A-A SMA, L.P. Atairos Partners, L.P. is the sole voting shareholder of Atairos Group, Inc. Atairos Partners GP, Inc. is the general partner of Atairos Partners, L.P. Michael J. Angelakis directly or indirectly controls a majority of the voting power of Atairos Partners GP, Inc. and serves on the board of directors of the Issuer. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its or his pecuniary interest therein. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its or his pecuniary interest therein. Reflects shares of Common Stock directly beneficially owned by A-A SMA, L.P. Reflects shares of Common Stock directly beneficially owned by AGI-T, L.P. ATAIROS PARTNERS GP, INC. /s/ David Caplan Name: David Caplan Title: Vice President 2025-05-28 ATAIROS PARTNERS, L.P. /s/ David Caplan Name: David Caplan Title: Vice President 2025-05-28 ATAIROS GROUP, INC. /s/ David Caplan Name: David Caplan Title: Vice President 2025-05-28 A-T HOLDINGS GP, LLC, by ATAIROS GROUP, INC., its sole member and manager, by /s/ David L. Caplan, Authorized Signatory 2025-05-28 AGI-T, L.P., by A-T HOLDINGS GP, LLC, its general partner, by ATAIROS GROUP, INC., its sole member and manager, by /s/ David L. Caplan, Authorized Signatory 2025-05-28 A-A SMA, L.P., by A-A SMA GP, LLC, its general partner, by ATAIROS GROUP, INC., its sole member and manager, by /s/ David L. Caplan, Authorized Signatory 2025-05-28 A-A SMA GP, LLC, by ATAIROS GROUP, INC., its sole member and manager, by /s/ David L. Caplan, Authorized Signatory 2025-05-28 Michael J. Angelakis /s/ David Caplan, attorney-in-fact for Michael Angelakis 2025-05-28